62 results about "Global solar radiation" patented technology

The embodiments of the invention disclose a prediction method and a prediction system for predicting the generating capacity of a photovoltaic power generation system. The prediction method comprises the following steps: estimating the proportion of the area of cloud in the sky in the sky area corresponding to a second preset moment according to the proportion of the area of cloud in the sky in the sky area corresponding to a first preset moment; calculating the total solar radiation at the second preset moment according to the proportion of the area of cloud in the sky in the sky area corresponding to the second preset moment; and finally, predicting the generating capacity of a photovoltaic power generation system at the second preset moment according to the total solar radiation and the temperature at the second preset moment. The error of the prediction method for predicting the generating capacity of a photovoltaic power generation system provided by the embodiments of the invention is within the allowable error range. The time range for prediction is extended.

The invention relates to a calibration device and a calibration method used for an indoor pyranometer. A supporting pillar and a positioning pillar are arranged on left and right surfaces of a rotating crossbeam respectively, and a rotating shaft is fixed in a bearing in a shaft core and is movably connected with a fixed shaft; a light shield is fixed at the bottom end of a light shield disc, theupper end surface of the light shield disc is fixed with a crossbeam of a photochopper, the crossbeam of the photochopper is placed in a U-shaped mouth on an upright shaft of the photochopper and is connected with the upright shaft of the photochopper through a pin shaft; and the upright shaft of the photochopper is fixed on a worktable board, a turn table is fixed on the worktable board, the crossbeam of the photochopper is rotated clockwise to enable the light shield of the photochopper to be placed above the turn table, a light source support is fixed on the rear end surface of the worktable, an irradiation light is movably connected on the light source support, and the distance between the irradiation light and the worktable board can be adjusted. The method is characterized in that the calibration can be performed indoor at any time, and is not limited or influenced by weather; the light source is stable, the calibration time is short, and the stability is high; and the use is convenient, the efficiency is higher, and the data reliability is high.

The invention provides a solar radiation testing method which comprises the steps of (S1) setting a plurality of solar cell units in different collection sites, (S2) carrying out light attenuation larger than 20KWh / m2 on the solar cell units, (S3) collecting the solar total radiation of the plurality of solar cell units, obtaining a corresponding current value generated by the solar cell units through a sampling circuit and transmitting the current value to a single chip microcomputer, and generating solar total radiation data which can be compared, (S4) allowing the single chip microcomputer to obtain real-time time and the longitude and latitude of a sampling site from a real-time clock circuit and a GPS module, (S5) storing the solar total radiation data of the solar cell units through a storage module, and (S6) sorting the solar total radiation data from small to large through a processor.

The invention discloses an adjustable total solar radiation measurement bracket and an operation and application method thereof. The bracket comprises a measuring instrument clamping body, a horizontal rod, a solid screw, a vertical rod and a metal base, and is characterized in that the horizontal rod and the solid screw form a horizontal assembly through threaded connection, the measuring instrument clamping body is used for fixing a total solar radiation measuring instrument, the measuring instrument clamping body is enabled to be connected with the end part of the horizontal rod through a first fixing member so as to enable the total solar radiation measuring instrument to perform measurement in a suspended manner, the left end of the solid screw is provided with a screw thread, the right of the solid screw is provided with a screw hole, the surface of the solid screw is provided with horizontal scales, and the solid screw is fixedly connected with the vertical rod through a secondfixing member; and the vertical rod is fixed on the metal base. The bracket can adjust the vertical height and the horizontal length of the measuring instrument according to test requirements and thesample size. In addition, the adjustable total solar radiation measurement bracket is simple in structural design, easy to assemble and disassemble and convenient to carry.

The embodiments of the invention disclose a prediction method and a prediction system for predicting the generating capacity of a photovoltaic power generation system. The prediction method comprises the following steps: estimating the proportion of the area of cloud in the sky in the sky area corresponding to a second preset moment according to the proportion of the area of cloud in the sky in the sky area corresponding to a first preset moment; calculating the total solar radiation at the second preset moment according to the proportion of the area of cloud in the sky in the sky area corresponding to the second preset moment; and finally, predicting the generating capacity of a photovoltaic power generation system at the second preset moment according to the total solar radiation and the temperature at the second preset moment. The error of the prediction method for predicting the generating capacity of a photovoltaic power generation system provided by the embodiments of the invention is within the allowable error range. The time range for prediction is extended.

The invention discloses a measuring device and method of total solar radiation. The device comprises a total solar radiation sensing unit and a detection communication unit. The total solar radiation sensing unit comprises a round solar radiation absorbing area divided into white sectors and back sectors as many as the white sectors; the white sectors and the black sectors are spaced and mutually thermally insulated; the white sectors are provided with platinum resistors as many as those provided in the black sectors; the platinum resistors in the white sectors are mutually connected in series; the platinum resistors in the black sectors are mutually connected in series; the two sets of platinum resistors are both connected with the detection communication unit. According to the method, the total solar radiation is obtained using an RBF (radial basis function) neural network. The measuring device and method has the advantages of good timeliness, high precision, high reliability and the like and allow the solar radiation to be measured precisely and reliably under special weather conditions.